How to determine the session is defined or not for Yii::app()=>user?

[holala]

i want use

Yii::app()->user->setState('name',$value);

but i want determine is the ‘name’ set first?

how?

Thanks!

[bas_vdl]

http://www.yiiframework.com/doc/api/CWebUser#hasState-detail. hasState, {return} boolean, whether there is a state of the specified name.

Yii::app()->user->hasState('name');

[holala]

thank you very much!